What does Google say about SEO? /
The Crawl & Indexing category compiles all official Google statements regarding how Googlebot discovers, crawls, and indexes web pages. These fundamental processes determine which pages from your website will be included in Google's index and potentially appear in search results. This section addresses critical technical mechanisms: crawl budget management to optimize allocated resources, strategic implementation of robots.txt files to control content access, noindex directives for page exclusion, XML sitemap configuration to enhance discoverability, along with JavaScript rendering challenges and canonical URL implementation. Google's official positions on these topics are essential for SEO professionals as they help avoid technical blocking issues, accelerate new content indexation, and prevent unintentional deindexing. Understanding Google's crawling and indexing processes forms the foundation of any effective search engine optimization strategy, directly impacting organic visibility and SERP performance. Whether troubleshooting indexation problems, optimizing crawl efficiency for large websites, or ensuring proper URL canonicalization, these official guidelines provide authoritative answers to complex technical SEO questions that shape modern web presence and discoverability.
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★★ Should you really be worried about unloaded resources in Search Console?
The message 'X resources out of Y could not be loaded' in Search Console does not necessarily indicate a problem. Google does not load certain resources that are unnecessary for rendering (e.g., Googl...
Martin Splitt Jun 17, 2020
★★ Should you really avoid JavaScript for SEO, or is it just a persistent myth?
A WordPress site using a theme heavily dependent on JavaScript (no content without JS) can pose an SEO problem, but only if indexing or visibility issues arise. If the site operates correctly in Googl...
Martin Splitt Jun 17, 2020
★★ Do failed screenshots in Google Search Console really block indexing?
If the URL Inspection tool or headless Chromium tools cannot generate a screenshot of a long page, it is not an issue for indexing. Only the rendered HTML counts; the screenshot is optional and a gene...
Martin Splitt Jun 17, 2020
★★ Should you remove the canonical tag instead of correcting an incorrect one using JavaScript?
Providing an incorrect canonical tag in the initial HTML and then correcting it via client-side JavaScript can, albeit rarely, create confusion for Google. It is better not to have a canonical than to...
Martin Splitt Jun 17, 2020
★★★ Does the rendered HTML in Search Console really reflect what Googlebot indexes?
Google's testing tools (URL Inspection Tool, Rich Results Test, Mobile-Friendly Test) display the rendered HTML as seen by Googlebot. If content appears in the rendered HTML, Google can use it; if it ...
Martin Splitt Jun 17, 2020
★★ Should you restrict access for users without JavaScript to protect your SEO?
Completely blocking access to the site and displaying 'Please enable JavaScript' when JS is disabled is not a direct SEO issue as long as Googlebot can execute the JavaScript. However, this approach i...
Martin Splitt Jun 17, 2020
★★★ Does client-side rendering really work with Googlebot?
With Evergreen Googlebot using a recent version of Chrome, JavaScript-rendered content on the client side (widgets, AJAX components) will likely be seen and utilized by Google if it appears in the ren...
Martin Splitt Jun 17, 2020
★★★ Should you really ignore noindex settings for your JS and CSS files?
Adding a noindex directive in the HTTP headers of JavaScript or CSS files is generally unnecessary as they are not usually indexed. However, you must not block their crawl via robots.txt, as this can ...
Martin Splitt Jun 17, 2020
★★★ How can you prioritize hybrid server/client rendering without harming your SEO?
For a hybrid rendering approach (server-side + client-side), prioritize critical content server-side: title, meta description, canonical, and the main content expected by the user (product description...
Martin Splitt Jun 17, 2020
★★ Is it true that blocking a site without JavaScript risks an SEO penalty?
Completely blocking a site without JavaScript and displaying a 'please enable JavaScript' message does not result in a direct SEO penalty, but it poses user experience issues if JavaScript fails or is...
Martin Splitt Jun 17, 2020
★★★ Is it true that client-side JavaScript rendering really harms Google indexing?
Client-side rendered content through JavaScript (widgets, AJAX components) is visible and usable by the evergreen Googlebot, provided it appears in the final rendered HTML. There are no inherent issue...
Martin Splitt Jun 17, 2020
★★ Should you add a noindex to JavaScript and CSS files?
Adding a noindex header to JavaScript or CSS files is generally not useful because these files are typically not indexed. This is not an issue, but not blocking these resources via robots.txt is more ...
Martin Splitt Jun 17, 2020
★★ Can removing pages from a sitemap actually limit their crawling by Google?
Sitemaps help Google crawl better, but do not limit what is crawled. Removing pages from a sitemap does not prevent Google from crawling or indexing them. Google crawls the site normally even without ...
John Mueller Jun 12, 2020
★★ Does the source of content affect the crawl budget?
There is no difference in the crawl budget based on whether the content is written by you, a team of writers, or generated by users. The important factor is to structure the site so that Google can cr...
John Mueller Jun 12, 2020
★★★ Why does Google suddenly show more non-indexed URLs in Search Console?
Google now prominently displays discovered but non-indexed URLs in Search Console. This is not a change in indexing itself but in the way this information is reported. Google has always been selective...
John Mueller Jun 12, 2020
★★★ Is Google really testing the AMP version for Core Web Vitals even if the mobile version is indexed?
For evaluating Core Web Vitals and the page experience score, Google tests the version that users actually see. If a site has an AMP version, it is the AMP version that will be tested for speed and us...
John Mueller Jun 12, 2020
★★★ Should you really keep the canonical from desktop to mobile in mobile-first indexing?
For sites with separate mobile URLs (m.example.com), even after the switch to mobile-first indexing, you must continue to set the rel canonical from the mobile version to the desktop version and the r...
John Mueller Jun 12, 2020
★★★ Why do your desktop images and videos become invisible to Google in mobile-first?
With mobile-first indexing, if images or videos are very visible on desktop but tiny or at the bottom of the page on mobile, they are less likely to appear in image and video search results. Visual co...
John Mueller Jun 12, 2020
★ Why does Google sometimes index your AMP pages before their canonical HTML version?
Google may sometimes discover and index an AMP page before its canonical HTML version, especially if links point directly to the AMP. Once the HTML page is crawled, Google connects the two versions an...
John Mueller Jun 12, 2020
★★ Does Discover really work without strict technical criteria?
There are no specific technical requirements, mandatory formats, or necessary meta tags to appear in Discover (except for not blocking crawls). You need to create content that your audience really lik...
John Mueller Jun 12, 2020
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